So are you saying that you replaced your wipers with a better one?
I called Napa and I am going down to look at a blade and arm they said would work I hope that it is better then the ones I bought.
I had a problem with the wiper blade hitting the trim on top of the windshield and was trying to figure out which one worked better(I eventually figured out that the Napa one worked better without hitting the trim). I had to take a pair of vise grips and pull the pin out that held the wiper blade on. That's why I think that there is little danger of the Napa supplied blades from coming off. They fit well just like originals and keep the windshield clean, and aren't all that expensive either.